/*
 * A Fan is a layout that consists of two parts:
 * The base and the surface, named after a hand fan.
 * The base is always left handed, where as the surface
 * can be right of the base or below.
 */

/* ######################
 * Block Modifiers Mixins
 * ###################### */

/*
 * Base on the left, Surface on the right
 * Base is fixed, given size, Surface is given height
 * but will fill the parent's width
 */
RV-Fan--horizontal(base-height, base-width)
	+RV-Block__Modifier--name('horizontal')
		flex-direction row
		
		+RV-Element('Surface')
			min-width calc_width('calc(%s * 1.5)' % base-width)
			height calc_height(base-height)

/*
 * Base above, Surfce below
 * Base is fixed, given size, base is given width
 * minimal height is given height, will grow with content
 */
RV-Fan--vertical(base-height, base-width)
	+RV-Block__Modifier--name('vertical')
		flex-direction column
		width max-content
		min-width initial
		
		+RV-Element('Surface')
			width calc_width(base-width)
			min-width initial
			min-height base-height


/*
 * Initialy horizontal, changes to vertical when
 * the width of the parent is less than 2 x base-width
 * Width of the base and surface in vertical are base-width
 */
RV-Fan--auto(base-height, base-width)
	+RV-Block__Modifier--name('auto')
		flex-flow row wrap
		min-width initial

		+RV-Element('Surface')
			min-width calc_width('calc(%s)' % base-width)
			width calc_width('calc(100% - %s)' % base-width)
			height calc_height(base-height)
			flex-grow unset
			flex-basis unset

/*
 * Also initialy horizontal, changes to vertical when
 * the width of the parent is less than 2 x base-width
 * Width of the base and the surface in vertical mode 
 * are 100% of the parent width
 */
RV-Fan--fullWidth(base-height, base-width)
	+RV-Block__Modifier--name('fullWidth')
		RV-Fan--auto(base-height, base-width)
		min-width min-content
		
		+RV-Element('Base')
			flex-grow 1
			
		+RV-Element('Surface')
			flex-grow 1
			min-width calc_width('calc(%s * 1.5)' % base-width)


/* ###############
 * Element Mixins
 * ############### */
RV-Fan__Base(base-height, base-width)
	+RV-Element--name('Base')
		height calc_height(base-height)
		width calc_width(base-width)
		flex-grow 0
		flex-shrink 0
		flex-basis auto

RV-Fan__Surface--fixedHeight(height)
	+RV-Element__Modifier--name('fixedHeight')
		height calc_height(height)

RV-Fan__Surface--fixedWidth(width)
	+RV-Element__Modifier--name('fixedWidth')
		max-width calc_width(width)

RV-Fan__Surface(base-height, base-width)
	+RV-Element--name('Surface')
		overflow hidden
		height calc_height(base-height)
		width calc_width()
		min-width calc_width('calc(%s * 1.5)' % base-width)
		
		flex-grow 20
		flex-shrink 0
		flex-basis calc_width(base-width)

/* ############
 * Block Mixin
 * ############ */
RV-Fan()
	display flex
	position relative
	min-width min-content

/* #########
 * CSS-Class
 * ######### */
+RV-Block('RV-Fan')
	RV-CSSParameter({
		base-height: 280px,
		base-width: 320px
	})
	
	--inner-spacing 0px

	RV-Fan()
	+RV-Element()
		RV-Fan__Surface(--base-height, --base-width)
		
		+RV-Element__Modifier()
			RV-Fan__Surface--fixedWidth(--base-width)
			
		+RV-Element__Modifier()
			RV-Fan__Surface--fixedHeight(--base-height)

	+RV-Element()
		RV-Fan__Base(--base-height, --base-width)

	+RV-Block__Modifier()
		RV-Fan--fullWidth(--base-height, --base-width)
	+RV-Block__Modifier()
		RV-Fan--vertical(--base-height, --base-width)
	+RV-Block__Modifier()
		RV-Fan--horizontal(--base-height, --base-width)
	+RV-Block__Modifier()
		RV-Fan--auto(--base-height, --base-width)